HCLTech Interview Question

1. OOP concepts 2. Difference between Abstract class and interface 3. Execution way of JAVA(JVM) 4. Threads 5. SQL ( Difference between having and group by)

HCLTech Interview Question: 1. OOP concepts 2. Difference between Abstract class and interface 3. Execution way of JAVA(JVM) 4. Threads 5. SQL ( Difference between having and group by) | Glassdoor